Rolling land buck



Sept. 19, 1939. P. DIXON ROLLING LAND BUCK Filed April 12, 1938 2 Sheets-Sheet l Pe /4y fiz 195072 ATTO R N EYS Sgpt. 19, 1939. ,P. DIXON 2,173,623

ROLLING LAND BUCK Filed April 12, 1938 2 Sheets-Sheet 2 1% w Percy al (org INVENTOR av @595: /mwr.

ATTQRNEYS Patented Sept. 19, 1939 PATENT OFFICE ROLLING LAND BUCK Percy Dixon, Klamath Falls, 0reg., assignor of one-half to D. A. Kenyon, Klamath Falls,

Oreg.

Application April 12, 1938, Serial No. 201,628

2 Claims.

This invention relates to rolling land bucks, and has for its principal object to produce an improved device of this character for scraping and leveling land and making land checks, either border or contour, in preparation for the planting of cultivated fields, and for other like purposes.

A further object is to provide simple and efficient means for holding the body blade or board in different releasable latched positions whereby the blade or board may be securely held in scraping position and released for partial rotation and re-locked in different rotative positions for variably spreading and leveling the accumulated surface soil which has been crowded in front of the blade or board during the scraping action, and whereby also the latching means may be held in disengaged relation to the blade or board whereby the latter may be continuously rotated, at will, in the land checking operation.

A further object is to produce a simple and inexpensive structure in a device of this character, possessing the requisite strength and durability to withstand the rough usage to which it is subjected and which may be horse drawn or applied as an attachment to a tractor.

With these and other objects to be attained, as will later more fully appear, the invention consists in the general structure and in the particular parts and combinations and arrangements of parts thereof, as hereinafter described and pointed out in the appended claims, reference beinb had to the accompanying drawings illustrating a practical adaptation of the invention, and in which Figure 1 is a top plan view of the device;

Figure 2 is a side elevation showing the blade element in normal scraping position;

Figure 3 is a fragmentary face view of the blade element;

eral It), said element preferably comprising a wooden board of considerable heft for rigidity and durability. This board is surrounded marginally by a rectangular metal frame II at the opposite ends of which trunnions I2 are provided to which the rear end portions l3 of a yoke-like draft frame M are pivotally attached, said frame portions l3 having hubs [5 which are retained on the trunnions or spindle extensions l2 by collars l6 and cooperating cotterpins ll, as shown, or by any suitable approved retaining means. The forward portion of the draft frame !4 is convergent and attached to a suitable draft piece l8 having an apertured lug I 9 at its outer end for the attachment of a coupling link 29. The draft frame is preferably reinforced by transverse braces l4 connecting the forwardly convergent side portions l4.

Secured on opposite sides of the board l0, near the ends thereof, are semi-circular roller shoes 2| having ears 22 at their opposite ends which are apertured for the reception of securing bolts 23 by which said members 2| are attached to the board 10, each pair of elements 2| being cooperatively applied in opposed relation to each other on the board whereby to constitute a roller on which the board may ride and rotate under certain conditions as will later more fully appear.

Detachably mounted at the middle of the blade element or board H1, and one on each side thereof near the opposite longitudinal margins thereof, is a diagonally opposed pair of sector-like frames 24 which are secured in place by bolts 25 whereby they may be firmly supported yet readily removable, at will. These brackets 24 have arcuate peripheral portions26 which are substantially tangential to the longitudinal margins of the blade or board l0 and are provided at their outer ends with lugs 21 which project radially from the peripheral surface of the acuate portion 65 gagement of the lug 3! on the lever 25 with the lowered position of the lever 29 whereby to lock the blade or board It! against rotation. Pivotally mounted, as at 32, between the outer end portions of the longitudinal bars of the lever 29, is a tripping element having a cam portion 33 at one end and an oppositely extending angular arm 34 to which a tripping cord or link 35 is attached, said cord or link extending forwardly from the tripping device to a position on the tractor (not shown) within convenient reach of the operator. To prevent overtravel of the tripping element to its normal position, particularly when the lever member 29 is raised, a stop plate 33' is provided at the upper side of said lever 29.

In the normal position of the parts as shown in Figure 2, the lug 3| on the lever 29 is positioned in front of the upper frame portion H and said cam portion 33 of the tripping device rests on said frame portion H, at which time the blade or board i9 is locked against rotation and rides on its lower longitudinal marginal portion with a scraping effect on the ground. Should it be desired to rotate the blade lil partially and hold its lower marginal portion elevated above the ground, the cord 35 is pulled to rock the tripping element and press its cam portion 33 upon the adjacent frame portion H, thereby raising the lever 29 until the lug 3| is moved clear of the frame member H (see Figure 4) whereupon the blade I0 is free to rotate and rides forwardly on the circumferential portion 26 of the lower bracket 24 and if the cord 35 is immediately released the lug 3! will ride upon the portion 26 of the upper bracket 24 and into the path of the lug 2'! on said upper bracket, and upon engagement of said lug 2'! on the bracket 2G with the lug 35 on the lever 29 further rotation of the blade IE is prevented and said blade is then dragged on the lug portion 2'! of the lower bracket 24 with the lower edge of the blade above the ground (see Figure 5). In this position of the blade E0 the loose soil which has been previously scraped up and accumulated in front of the board is levelled out beneath the blade to the depth corresponding to the elevation of the blade and thereafter the lever 29 is released from the upper bracket 2% and the board if! is again rotated until a half turn is completed and the lower frame portion H has come in contact with the lug 3i, whereupon the parts will again be in the position as shown in Figure 2. It will thus have been seen that the board i3 is releasably held in either the vertical normal position as shown in Figure 2 or in the partially rotated position as shown in Figure 5,

or alternately released for rotation between these positions.

In this connection, it is noted that during the full half or complete rotation of the board it it is supported intermediate of said brackets 24 by the semi-circular shoes 2i. In some cases, particularly when the apparatus is used for land checking, the frames 24 are removed-so that the board is supported in its rotative movement entirely by the semi-circular members 2! the board H3 being held in its vertical position by the enupper frame member H and upon the release of said lug 3| from said frame member l I the board will normally be rotated a full half revolution before being again arrested by the lug 3 i provided,

of course, the lever 29 has been lowered with the lug 3| in the path of said frame member H, but if said lever 29 has not been so lowered the rotation. of the board lb continues on uninterruptedly. However, supplemental locking means is provided to stop the rotative movement of the board before the completion of a half revolution, as shown in Figure 6. For this purpose locking dogs 36 are provided at opposite sides of the draft frame i4, said dogs 36, as shown, being of bellcrank form and pivotally mounted, as at 31, to swing in a horizontal plane into and out of the orbit of the longitudinal frame portion II on said blade element H). For manipulating these dogs 36 and holding them in their locking and unlocking positions they are respectively connected by links 38 to an operating lever 39 having a latch element 40 engageable in a notched retaining sector 6| mounted on the frame M adjacent the pivotal portion of the lever 39. By this provision, the board may be obviously locked initially in a vertical position, released after a definite scraping action and engaged after a partial rotation, as shown in Figure 6, and then released for the completion of a half revolution with substantially the same effect as in the operation with the brackets 24 applied, and with the removability and interchangeability of the bracket members 24 a greater range adjustment and adaptability of the device is attained.

In order to guide the lever member 29 in its vertical movement and also to resist lateral thrust upon it, said lever member is extended through an upstanding looped bracket frame 42 which is attached at its lower end to one of the frame cross members 14, as at 43, said bracket frame 42 having upper and lower cross bars 4 3 and 45 between which the lever member 29 extends and is thereby limited in its vertical movement.

Obviously, the structure admits of considerable modification within the spirit of the invention as defined by the appended claims, the invention, therefore, is'not limited to the specific construction and arrangements shown.

What is claimed is:

1. A rolling land buck comprising a rectangular board embordered marginally by a rectangular metal frame having trunnions at its opposite ends, a draft frame to which said trunnions are rotatably attached, semicircular shoe members on opposite sides of said board near the opposite ends thereof, the over-all diameter of said shoe members being less than the diametric dimension of the board, opposed bracket members on opposite sides of the board, said bracket members having arcuate shoe portions substantially tangential with the longitudinal edge portions of the board and a circumferential lug, a locking lever on said draft frame having a stop lug for alternate engagement with the upper marginal frame portion of the board and the circumferential lugs on said bracket members, and a tripping element on said locking lever engageable with the frame member and bracket lugs on said board whereby to disengage the stop lug from the marginal frame portion and bracket members of the board in substantially vertical and partially rotated positions of the board.

2. In a rolling land buck, a draft frame, a blade element including a rectangular board surrounded by a rectangular marginal frame, said frame having axial end trunnions rotatively attached to said draft frame, cooperative pairs of semi-circular shoe members on opposite sides of said board and adjacent the opposite ends thereof, detachable bracket members located in diagonally opposed relation to each other, one on each side of the board and mid-Way between the ends thereof, said bracket members having arcuate circumferential portions substantially tangential with the adjacent longitudinal edge of the board and having a circumferential lug, a locking lever on said draft frame having a stop lug engageable alternately with the upper marginal frame portion of said board and the circumferential lug on said bracket members, whereby to releasably lock the board in vertical and partially rotated position, a tripping element engageable with the marginal frame of said board and with said bracket members for actuating said locking lever to retract its stop lug, and supplemental latch means on said draft frame for engaging the marginal frame of said board to releasably lock the board in partially rotated position.

PERCY DIXON. 

